Meizu EP-51 Bluetooth Sport Wireless Headphones HiFi, Stereo Magnetic Earphones/Earbuds with Built-in Mic Perfect workout headphones that are snug and secure so the headphones stay put while running or biking Earbuds that work with all smartphones, tablets and music players Water and swear resistance layer, high strength, elastic and anti-tangled cable Long battery life allows the headphones to play up to 6 hours of continuous music at a time Built-in magnets let you attach the two headphones together when not using and wear like a necklace